<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>BOM</title>
		<script type="text/javascript">
			window.onload = function() {
				// console.log(window); // [object Window]
				// console.log(navigator); // [object Navigator]
				// console.log(location); // [object Object]
				// console.log(history); // [object History]
				// console.log(screen); // [object Screen]
			}
		</script>
	</head>
	<body>
	</body>
</html>
